Be FHS conform <http://bugs.gentoo.org/show_bug.cgi?id=36842>
--- /tmp/pic2graph	2003-12-30 22:23:38.000000000 +0100
+++ /usr/bin/pic2graph	2003-12-30 22:24:56.000000000 +0100
@@ -73,7 +74,7 @@
 # 2. Process through eqn and pic to emit troff markup.
 # 3. Process through groff to emit Postscript.
 # 4. Use convert(1) to crop the PostScript and turn it into a bitmap.
-tmp=/usr/tmp/pic2graph-$$
+tmp=/var/tmp/pic2graph-$$
 trap "rm ${tmp}.*" 0 2 15 
 (echo ".EQ"; echo $eqndelim; echo ".EN"; echo ".PS"; cat; echo ".PE") | \
        groff -e -p $groffpic_opts -Tps >${tmp}.ps \